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Finding the Fourth Proportional to 223,338.63, 308,082.56 and 137,237.79

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Solution

The fourth proportional to 223,338.63, 308,082.56 and 137,237.79 is: 189,311.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,338.63 : 308,082.56 = 137,237.79 : x
  2. Step 2: Convert to fraction form
    223,338.63/308,082.56 = 137,237.79/x
  3. Step 3: Cross multiply
    223,338.63x = 308,082.56 × 137,237.79
  4. Step 4: Simplify right side
    223,338.63x = 42,280,568,985.75
  5. Step 5: Solve for x
    x = 42,280,568,985.75/223,338.63
  6. Step 6: Final answer
    x = 189,311.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.